Figure F59. Diagram of TiO2 vs. (A) Mg#, (B) Zr, (C) Ni, (D) Cr, and (E) Sc. Mg# = 100 × [Mg2+/(Mg2+ + Fe2+)], assuming that Fe2O3/FeO = 0.15. Site U1349 sample with the lowest TiO2 value is the split of carbonate-dominated "foamy" lava from Sample 324-U1349A-11R-5 (Piece 1A, 12–15 cm). Data for two carbonate-rich veins from Site U1346 are not shown (see "Geochemistry" in the "Site U1346" chapter); nor are data for the melt segregation and altered glass of Site U1347 (see "Geochemistry" in the "Site U1347" chapter). OJP = Ontong Java Plateau (data from Tejada et al., 1996, 2002; Fitton and Godard, 2004), EPR = East Pacific Rise (data from Sinton et al., 1991; Bach et al., 1994; Mahoney et al., 1994), Nazca-ESC = Nazca Ridge and Easter Seamount Chain (data from Ray et al., 2010).
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